[SOLVED] User Preferences Page

Hello to all!

Is there a way to set the default language for all users of the Webmail? Here, all new users receive the language "English - United States." Where do I set for all new users receive the language "Portuguese - Brazil" for example?

And finally, there is any way to remove olny the tab "account" from the "user's preferences" page?

Can't 'easily' remove just the accounts tab (though you could hide it with a zimlet) but in the admin console gui you can remove a lot of functionality on that page:
-Turn off Personas (features tab of COS/user)
-Turn off External IMAP/POP aggregation (features tab of COS/user)
-Don't allow the user the 'ability to send from any address' (preferences tab of COS/user)